CN212154754U

CN212154754U - Transmission assembly of logging instrument

Info

Publication number: CN212154754U
Application number: CN202020256775.6U
Authority: CN
Inventors: 丁文强; 王志颖; 曹景浩
Original assignee: Shenyang Jingjin Precision Instrument And Meter Research Institute
Current assignee: Shenyang Jingjin Precision Instrument And Meter Research Institute
Priority date: 2020-03-05
Filing date: 2020-03-05
Publication date: 2020-12-15
Anticipated expiration: 2030-03-05

Abstract

The utility model relates to a transmission assembly of logging instrument, the left side of removal nut is connected with motor drive's main shaft, and the lead screw left part passes through threaded connection with the removal nut, and the lead screw right part is blocked by the stop collar, and the lead screw right-hand member is equipped with the disc terminal surface, and the spring beam is connected to the disc terminal surface, and the cover has first spring on the spring beam, and the spring beam outside is equipped with fixed casing, and the spring beam passes fixed tip, and the well footpath arm is connected to the spring beam right-hand member. The utility model discloses be convenient for dismantle, maintain transmission assembly to do not influence opening, drawing in of hole diameter arm.

Description

Transmission assembly of logging instrument

Technical Field

The utility model relates to an electronic equipment technical field, concretely relates to transmission assembly of logging instrument.

Background

The logging instrument is used in well drilling field, and can scan well wall continuously and horizontally to give well vertical section, horizontal section, effective section and inclined distance.

The logging instrument mainly comprises an electromechanical component, a transmission component, a support arm component and a balance component, wherein the electromechanical component is used for driving the transmission component, and the transmission component pushes the support arm component to be opened and closed. The transmission principle of the transmission assembly in the prior art is that a spindle driven by a motor is connected with a lead screw, a movable nut is arranged on the lead screw, the movable nut is limited by an external cavity and cannot rotate, when the lead screw rotates, the movable nut moves axially along the lead screw, the end part of the movable nut is connected with a spring rod, and the spring rod follows the movable nut to move axially along the lead screw, so that the spring rod pushes a well diameter arm to open and close. The problems of the transmission mode are as follows: the motor assembly is fixedly connected with the transmission assembly through the oil bin shell, the oil bin shell is connected with the transmission assembly through the threaded sleeve, and the oil bin shell is fixed with the motor assembly through the pin shaft. When the well diameter arm is in a working state, the motor supplies power, the lead screw rotates, the movable nut moves, and the compression spring stores energy to open the well diameter arm. Until the motor stop rotating, remove the nut and stop moving, the well footpath arm is whole opens, through the change of the well footpath arm opening size, spring beam displacement linkage potentiometer output resistance value calculates the well footpath value, because of inside spring of drive assembly and potentiometer all belong to wearing parts, just must tear oil sump shell off if inspect the drive assembly. The oil bin shell is removed, the motor assembly cannot be fixed, and when the motor rotates, the whole motor assembly can rotate, so that the single-core sealing plug is damaged and the lead is broken. At the moment, the movable nut is not fixed with the supporting seat, and when the motor assembly and the lead screw are not supported, the well diameter arm cannot be opened, so that whether the output change value of the potentiometer is correct or not can not be visually checked by simulating and pressing the opening size of the well diameter arm. Meanwhile, the movable nut only moves axially through the limit of the pin shaft without rotating, and the lead screw rotates and moves to generate jumping when the nut moves without fixing a bearing or a limit sleeve, so that current signals are unstable.

Disclosure of Invention

An object of the utility model is to solve above-mentioned problem, provide the transmission assembly of logging instrument.

In order to solve the above problem, the utility model discloses a technical scheme as follows:

the transmission assembly of the logging instrument is characterized in that the left side of the movable nut is connected with a motor-driven spindle, the left part of the screw rod is connected with the movable nut through threads, the right part of the screw rod is square, the right part of the screw rod is clamped by a limiting sleeve, the right end of the screw rod is provided with a disc end face, the disc end face is connected with a spring rod, the spring rod is perpendicular to the disc end face, the plurality of spring rods are uniformly distributed on the disc end face in a circumferential mode, a first spring is sleeved on the spring rod, a fixed shell is arranged outside the spring rod, the spring rod penetrates through the end portion of the fixed shell, and the right end of.

Furthermore, a potentiometer is arranged between the end face of the disc and the spring rod, a thimble is arranged on the end face of the disc and is over against the potentiometer, a second spring is sleeved on the potentiometer, a potentiometer cap is arranged at the end part of the potentiometer, and the potentiometer cap is connected with the spring rod.

Furthermore, a thrust bearing is arranged between the movable nut and the outer shell, and a needle bearing is arranged between the two thrust bearings.

Compared with the prior art, the utility model discloses favourable effect does:

(1) the left side of removal nut is connected with motor drive's main shaft, the lead screw left part passes through threaded connection with the removal nut, the lead screw is fixed by the stop collar, when the removal nut rotates, lead screw axial displacement, motor element main shaft right-hand member is the hexagonal, and with the cooperation of removal nut, the main shaft only transmits the moment of torsion and does not have the supporting role, the inside spare part of inspection drive assembly or potentiometric timing can be adjusted to under the leg state of opening, pull down the oil sump shell, can pull down motor element simultaneously, and rely on the manual adjustment well diameter arm of hexagonal spanner to open, draw in, the utility model discloses be convenient for dismantle, maintain drive assembly to do not influence opening, drawing in of well diameter arm.

(2) The structure is favorable for each well diameter arm to independently transmit signals through the potentiometer, and irregular well diameters are measured.

(3) A thrust bearing is arranged between the movable nut and the outer shell, a needle bearing is arranged between the two thrust bearings, the thrust bearing and the needle bearing play a role in supporting and fixing the movable nut, the rotation transmission is stable and reliable, the lead screw does not jump, and the current signal is unstable.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a block diagram of a drive assembly of a prior art logging tool;

FIG. 2 is a diagram of a transmission assembly of the logging tool of the present invention;

FIG. 3 is another perspective view of the transmission assembly of the logging tool of the present invention;

description of the drawings: the device comprises an electromechanical assembly-1, a transmission assembly-2, a spindle-11, a screw rod-12, a movable nut-13, a spring rod-14, an oil bin shell-15, a one-way core sealing plug-16, a movable nut-21, a spindle-22, a screw rod-23, a disc end face-231, a limiting sleeve-24, a spring rod-25, a first spring-26, a fixed shell-27, a well diameter arm-28, a potentiometer-29, an ejector pin-30, a second spring-31, a potentiometer cap-32, a thrust bearing-33 and a needle bearing-34.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention can be more clearly and clearly defined.

The structure of the prior art logging tool is shown in the accompanying figure 1: the well diameter arm moving mechanism mainly comprises an electromechanical assembly 1 and a transmission assembly 2, a spindle 11 driven by a motor is connected with a lead screw 12, a moving nut 13 is arranged on the lead screw, the moving nut 13 is limited by an external cavity and cannot rotate, when the lead screw rotates, the moving nut moves along the axial direction of the lead screw, the end part of the moving nut is connected with a spring rod 14, and the spring rod moves along with the moving nut, so that the spring rod pushes a well diameter arm to open and close. The motor assembly and the transmission assembly are fixedly connected through an oil bin shell 15, the oil bin shell and the transmission assembly are connected through a threaded sleeve, the oil bin shell and the motor assembly are fixed through a pin shaft, and a shell outside the main shaft is provided with a one-way core sealing plug 16.

The transmission assembly of the logging instrument in the embodiment is shown in the attached figure 2 in the specification: the left part of the movable nut 21 is connected with a main shaft 22 driven by a motor, the movable nut rotates synchronously with the main shaft driven by the motor, the left part of the lead screw 23 is connected with the movable nut through threads, the right part of the lead screw is square, the right part of the lead screw is clamped by a limiting sleeve 24, the lead screw is clamped by the limiting sleeve and cannot rotate in the rotation process of the movable nut, and therefore the lead screw moves in the axial direction. The lead screw right-hand member is equipped with disc terminal surface 231, and disc terminal surface connection spring beam 25, spring beam and disc terminal surface set up perpendicularly, and a plurality of spring beams are circumference evenly distributed on the disc terminal surface, and the cover has first spring 26 on the spring beam, and the spring beam outside is equipped with fixed casing 27, and the spring beam passes fixed casing tip, and the spring beam right-hand member is connected well footpath arm 28. The transmission process of the specific embodiment is as follows: the main shaft driven by the motor drives the movable nut to rotate, and the lead screw moves in the axial direction because the lead screw is limited by the limiting sleeve and cannot rotate, and the lead screw drives the spring rod to move in the axial direction. When the screw rod moves rightwards, the first spring of the screw rod is pressed, and when the screw rod moves leftwards, the spring rod is reset leftwards under the resilience force of the first spring. Motor element main shaft right-hand member is the hexagon to with removal nut cooperation, the main shaft only transmits the moment of torsion and does not have the supporting role, and inspection drive assembly inside spare part or potentiometre are adjustable to under the leg state of opening, pull down the oil bunker shell, can pull down motor element simultaneously to rely on the manual adjustment well diameter arm of hexagonal spanner to open, draw in, the utility model discloses be convenient for dismantle, maintain drive assembly to do not influence opening, drawing in of well diameter arm.

Further, a potentiometer 29 is arranged between the end face of the disc and the spring rod, an ejector pin 30 is arranged on the end face of the disc, the ejector pin is opposite to the potentiometer, a second spring 31 is sleeved on the potentiometer, a potentiometer cap 32 is arranged at the end part of the potentiometer, and the potentiometer cap is connected with the spring rod 25. When the screw rod moves rightwards, the thimble of the potentiometer is moved leftwards, the second spring is pressed, and when the screw rod moves leftwards, the thimble of the potentiometer is reset under the resilience force of the second spring.

Further, a thrust bearing 33 is arranged between the moving nut and the outer shell, a needle bearing 34 is arranged between the two thrust bearings, and the thrust bearing 33 and the needle bearing 34 are combined to support and center the moving nut and enable the moving nut to rotate more smoothly.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only preferred embodiments of the present invention, and the present invention is not limited by the above preferred embodiments, and various changes and modifications can be made without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the present invention as claimed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The transmission assembly of the logging instrument is characterized in that the left side of the movable nut is connected with a motor-driven spindle, the left part of the screw rod is connected with the movable nut through threads, the right part of the screw rod is square, the right part of the screw rod is clamped by a limiting sleeve, the right end of the screw rod is provided with a disc end face, the disc end face is connected with a spring rod, the spring rod is perpendicular to the disc end face, the plurality of spring rods are uniformly distributed on the disc end face in a circumferential mode, a first spring is sleeved on the spring rod, a fixed shell is arranged outside the spring rod, the spring rod penetrates through the end portion of the fixed shell, and the right end of.

2. The transmission assembly of claim 1, wherein a potentiometer is disposed between the end surface of the disk and the spring rod, the end surface of the disk is provided with a thimble facing the potentiometer, the potentiometer is sleeved with a second spring, and the end of the potentiometer is provided with a potentiometer cap connected to the spring rod.

3. The tool drive assembly of claim 1, wherein a thrust bearing is disposed between the traveling nut and the outer housing, and a needle bearing is disposed between the two thrust bearings.